Bread-making apparatus



W; F. l.. FISCH.

BREAD MAKING APPARATUS. A Pruclnlon mso un. 1o, 1911. nenfwzu muuu, 1920. 1,345,079.

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Witwe W. F. L. FISCH.

BREAD MAKING APPARATUS.

APPLICATION man APR. fo, |917. nfnswsn mm. 22, |920.

y l Patented June 29, 1920.

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BREAD MAKING APPARATUS.

APPLICATION msu APR. lo. 1911. nznzwzn MAR. 22.-!2o.

1,345,079. Patented June 29, 1920.

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w. F. L HscH. BREAD MAKING APPARATUS.'v

APPLICATION FILED APR. I0, I9I7. RENEWED MAR. 22, |920.

1,345,079. mallteam@ 29, 1920,.

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II III /l/ UNITED STATES*` PATENT OFFICE.

WILLIAM r. I.. ruga, or BIRMINGHAM, ALABAMA.

BBEAIMIAIIING AiPAna'rUs.

Specication of Letters Patent.

, Patented June 29,1920.

l Appntmn mea prix 1o, 1917, serial No. Isl-,064. nentwea March 22, 1920. swarm. senses.

To all whom t may concern.' Y

Be it known'that I, WILLIAM F. L. FISGH, a citizen ofthe United States of America, residing at Birmingham, in the county .of

Je'erson and State of Alabama, have 1nvented certain new and useful Improvements in Bread-Baking Apparatus, of which the followingis a specification.

My invention relates to' an' apparatus for ythe manufacture of loaves of bread which is more particularly adapted to produce loaves from an apparatus which charges' it with the dough through a proofing cablnet or chamber, and a baking oven to a transfer mechanism where the baked loaves are transferred to shelves on the'other conveyer. The' baking and proofing conveyer. continues from the transfer mechanism to a cool- 1ng apparatus, and thence to a cleansing and greasing apparatus, after which it is again charged with dough and the operation repeated. The other endless'conveyer carries hanging shelves which receive the .baked loaves from the transfer 4mechanism and conduct the same through a'cooler, wherein manner the entire operation is mechanicall7 i performed and all manual handling avoide the bread is cooled and dried under accurate and scientific control by means of an air blast, and from which the shelves are returned to the transfer mechanism. In this My invention comprises improvements in the construction, arrangement and operation of the proong chamber and of the bread cooling chamber, and also of the cooling apparatus for the pans. I have .conceive a novel automatic mechanism for cleaningl andoiling the bread pans while in motion. Another feature of my invention is the construction of the' transfer mechanismfor cleanin My invention comprises manyl other detalls of construction and arrangements of parts which in their preferred embodiment only are illustrated in the accompanying drawings, wherein j Fi re 1 illustrates in vertical section the proo ng, baking and cooling apparatus, and

Valso the pan cooling apparatus, while the transfer and the oilmg and cleaning mechanlsms-are diagrammatically illustrated.

Figs. 2 and 3 are end and front elevations of the transfer mechanism;

Fig. 4 is a plan view of the endless conshowingthe cleaning an oiling apparatus in lan.

veyer carrying the bread (pans o r molds and ig. 5 is asectional view taken /n the line 5*-5 of Fig. 4.

Fig. 6 is an. end elevation of the apparatus and greasing thel pans and shows the trlp'mechanism which, in plan, is shown in Fig. 7.

lar parts throughout the dr wings.

.In the embodiment of my nvention,il1us tratedA diagrammatically in'Fig. 1, I eniplpy one endless conveyer 10 which carries Similar reference numeral; refer to simimolds or baking pans 11 suspended therefrom so as to always hang vertically. This conveyer passes about a pulley 12 to a pulley 13 and between these points, ,an apparatus 14 formally illustrated, vdou h is fed into the molds or pans 11 which t ereupon pass into the proofer indicated gener` lally at 15 and com rising a vertical compartment through w ich the conveyer passes upwardly toa pulley 16 and thence horizontally through a compartment 17 to u `pulley 18. From. this point on, the proofer 'is divided into a series of similar connecting Vcompartnixents 19, 19", 19h and 19, and it will be noted that there may be as many7 ofthese compartments as may be desired. ach compartment has its side and bottom walls formed by an L-shaped casing 20 which is hollow and connected by a pipe 21 to a steam or heating main 22, a valvev 23 being prowhich comprises aY .rotaryv transfer drum having pockets in its periphery and sprockf veyers' in suc the drum' pockets they will be .automatically osition right slde up upon vided in each pipe 21 to control the supply ofsteam to the hollow casing 20. An 1nverted` L-shaped casn 24 forms part of the 4top and a downward y extending partition. Awhich stops short of the bottom of thecompartment. This casing 24 is also hollow and has a connecting pipe 25 opening 1nto a coolenlarged ir duct 26 and controlled by a valve .27.

he conveyer passes downwar lyvinthe first compartment to la pulleyl 28 disposed under the partition wall 24 and passes around it and thence upwardly between the said partijtion and the adjacent casing to`a pulley 29-and so on successively to the pulleys 30,

31, 32, 33, 34, to the pulley 35, making a zig-v -43 until it leaves the oven." The hollow wall members 40 andjil are independently suplplied with a heating medium through ports 44 and'45, respectively, so that the heat of the walls can be regulated in any suitable manner, such for instance as is described and claimed inv my pending application Seri-al After emerging' from the baking oven with the loaves baked, the conveyer passes under a pulley -46 and engages a transfer drum 47'which is provided with bread pockets 48, see Fig. 2,v into which the loaves of bread fall from the bread molds or pans 1n which they are baked as the latter are 1nverted in passing over the transfer drum, thence the conveyer and empty pans pass around a pulley 49 into a pan cooling apparatus designated generally by the numeral 50. Thls apparatus comprises a double casing having outer solid walls 51 and an inner inverted U-shaped perforated wall 52, the chamber inclosed in the wall 52 being prolvided with an air escape 53.to a chimneyor air duct, not shown. -The conveyer passes upwardly from the pulley 49 to a large y. with ports on either sidev from which thepulley 54 at the top` of the cooler and thence' downwardly to a pulley 55. Between the fllghts of the conveyer in the cooler, I provide an air blower 56, connected by a pipe 57 wlth an air source for supplying cold air under pressure and the blower is provided blasts of air escape against the conveyer and pass therethrough and through the perforated wall 52 to the escape duct 53. By this arrangement the conveyer and pans will be brought to the right temperature when in l position to yreceive another charge of bread.

The cooled conveyer passes over a pulley58 and under a pan cleaning and greasing apparatus designated generally by the numeral 59 to the pulley 12 and thence to the point where it is agaln charged with dough. This completes the endless travel ofthe conveyer ing and baking processes.

10 :which carries the dough through the ris-l I provide a second endless conveyer 60. p having suspended therefrom so as to hang in vertical position swinging shelves 61. This conveyer passes over a pulley 62 to a-pulley 63 on opposite sides of the transfer drum 47, these pulleys'being so arranged that the conveyer will engage the transfer drum 47 on the opposite side from andv pass in the opposite direction to the proofing and baking conveyer 10. The-shelves to the storage conveyer will automatically go in place over the bread pockets inthe transfer drum and as the conveyer and drum move on the bread will be deposited in upright position on the shelves 61.

The conveyer 60 thus loaded will pass in and through a storage and cooling room generally designated lby the numeral 64 and divided by vertical partitions 65 and 66 in -much the same fashion as the proofing and baking compartments as to form a zig-zag passage having av bottom series of pulleys 67 and a top series of pulleys 68, about l ,Whichr the'conveyer is guided in its passage. It is not however necessary to use double walls for the partitions and sides of the several compartments of this cooling and storage room, but I prefer to provide an air duct 69 leading from a blower and adapted to deliver air of the propertemperature, humidity and purity through ports 70Y into eachl compartment, it being important while the bread is cooling to subject it only to pure airto avoid its absorption of impurities.

The conveyer 60 passes out of the far endof the cooling room over a pulley 71 and rcturns to a pulley 72 and thence back to the j pulley 62, thus completing its circuit.

Both -conveyers 10 and 60 are formed of two sprocket chains and the pans 11 and shelves 61 are of the same length and pivotally connected by hangers to the sprocket chains. The several Apulleys 62', as shown in Fig. 2, have sprocket teeth 73 and the transfer drum has at each end a sprocket wheel 74 of less diameter than the drum so that the links of the conveyer chains in swinging to engage these sprocketwheels 74 will draw the pans or the shelves, as the case may be, against the open pockets of the drum. This -sprocket arrangement keeps the conveyers in proper relative relationship so that the pans' and the shelves will successively come over the pockets on opposite sides of the transfer drum. The pans 11 are gradually turned upside down to discharge the bread into the pockets 48. A shield'75, Fig. 2, holds the bread in the pockets as they approach discharging position until the shelf intended to receive the Abread ltherefrom is in position' to-prevent the bread falling out.

In order that a continuous conveyer carrying the bread pans or molds connected thereto can be used, it is-desirablel tojprovide an apparatus which` will clean and `belt V82 which passesabove the conveyer 10 to a tension pulley 83 controlled by an adjusting screw 84, both pulleys being mounted in a frame 85 which is carried by pivoted arms 86 having their axes concentric with the .pulley 77 and extending bel yond the s'ame to receive counterweights 87J After passing the pulley 83 the belt passes alternately over and under a series of small pulleys 88, each of which is fast on the center of a short shaft 89, parallel with the conveyer and carrying at opposite ends sprockets or pulleys- .90 and v91. Each of these pulleys, by means'of a separate -belt 92, will serve to drive a shaft 93. Each shaft 93, corresponding in length substantially to the width ofthe pans or molds, carries thereonl cleaning or oiling brushes'. The cleaning brushes'are designated as 94, and three, of them are arranged on one set of shafts 93 and'they are disposed normally above the\top of the molds. brushes 95 are similarly arranged on the other set of shafts 93. As seen in Fig. 5, two sets of oiling or cleanin arranged for each bread mol which I indicate as 96. Between each set of oiling brushes for each mold4 96, I provide an oiling spray nozzle 97. The several nozzlesv 'are connected in manifold by pipes 98 and flexible hose pipes 100 to a supply pipe 99 leading from the oil tank 101. The pipe 99 has a main valve 102 nearthe tank and each pipe 98 has therein a trip valve 103 normally held "in Iclosed position. Individual valves 104 regulate the supply of oil to each spray. The swin ing frame carrying the cleaning and oi ing apparatusy is lsupported by a pendent bracket 105 having a bottom roller 106 which rides normally upon the periphery of a pairof cams 107 and 108 which are similar and designed as shown in Fig.v 6, the cam 107 being madel fast on a shaft`108 driven by a belt or chain 109 from a pulley or sprocket wheel 110 driven by the pulley 77. A gear wheel 111 is also fast on the shaft108a and this 107. The roller 106 is wide enough to er1- gage both cams and it thus follows that the frame is supported at all times except when the notches of the two cams are coincident I when passing under the roller. The gear- The oiling v brushes are ing and arrangement is such that this takes place at intervals which will drop the brushes momentarily into the pans as they are successively moved into position under it and the more rapidly movingv cam will lift the brushes quickly out 'before the slowly moving'bread conveyer has fouled them. The drop of the oiling apparatus will automatically open the oil supply valves 103 asfeach is connected by a rod 115 to a -fi'xed pivot 116,'so that a spray of oil will be delivered to each pan or mold and dis- ,tributed 'thereover by the brushes 95.

Any suitable apparatus may be employed for delivering the dough batches into the pans or molds after they have been cleaned andoiled. v A

My reason for usingv the ytwo cams 107 and 108 for operating the pan cleaning and greasing mechanism-is that I am enabled by driving these two at different ratios of speed to permit one to move very slowly in synchronism with the baking conveyer so as to form the vmaster control cam while the other is drivenmore rapidly than the master control cam and will thus be adapted to drop and raise the cleaning and oiling mechanism with a rapid action. This rapid action-is essential for producing the best results from .the cleaning and oiling device and to avoid contact with the sides of the mold and it would be quite dillicult toy ob- "itain the necessary rapidity of action from a caml moving synchronously with the slowing traveling conveyer.

This inventlon is not intended lto be restrictedin scope `to the specific embodiment shown, but contemplates such modifications as come within the spirit and scope of the claiIns. l

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is':--.

1. In a bread making plant, the combination consisting of proofing and baking chambers, a conveyer passing circuitously through the proofing and baking chambers, bread baking pansconnected to and movablewith the conveyer through both chambers, and a pan greasing apparatus adapted to act on thepans in their travel from the bakin to the proofing chamber.

2. l n a bread making plant, the combination consisting of proofing and baking chambers, Aa conveyer passing circuitously through, both chambers 'and carrying baking pans, means to deliver bread to the pans in advance of the proofing chamber, means to discharge the bread from ,the pans as they emerge from the baking chamber, and instrumentalities for cooling, cleaning and greasing the pans disposed to act .thereon in the passage of the pans from the baking to the proofing chamber.- w

3. In a bread making plant, the combination consisting of proofing, baking and cooling chambers for the bread, one conveyer passing circuitously through the bakingi and 4. In a bread' making plant, a baking,

chamber, a bread cooling chamber,`an endless conveyer traveling through lthe baking as described.

chamber and carrying baking pans,.a second endless conveyer traveling through the cooling chamber and carryin bread supporting shelves, and a means or automati-` cally transferring the baked loaves of bread 'from the pans of the first conveyer to the shelves of the second conveyer, substantially 5. In a bread makingv plant, the combination of an endless conveyer carryin bread -the movement of the cleanin pans and havingja slow continuous movement, a pan cleaning means disposed nor-- mally out of the path of the pans, and means synchronized with the conveyer for moving the cleaning means with ajquick motion into and out of engagement' wlth each moving pan as it passes. '1

9. In a bread making plant, an endless baking conveyer carrying attached pans and having a slow continuous movement, a pan vcleanlng means having a movable support andy disposed normally above the flight of the pans to be cleaned, means driven in synchronism with the conveyer for controlling lmeans 1nto and out of Aengagement with t e pans, said means comprising a pair of cams, means for driving them atdifferent speeds, said cams molds hinged thereto, a bakingy c amber through which said conveyer passes circuitously asecond conveyer carrying bread shelves, a transfer drum over which the baking conveyer passes and which has pockets to receive the bread from said conveyer, said other conveyer being also adapted `to engage the transfer drum 1n position to present its shelves successivelyk to receive the bread from the drum pockets.

6. In a bread making plant, a rotatable transfer drum' having bread pockets about its periphery and one or more sprocket wheels, two lconveyers, each having a sprocket chain to engage said sprocket Wheels to synchronize their movements relatively, to that of the drum, "and guides for V said conveyers being disposed to cause each topas's only partway about the drum and at d1 erent points, bread pans carriedby one conveyer and adapted to be inverted in their passage over the drum to discharge the baked bread into the drum pockets, and shelves carried by the other-conveyer and movable therewith into position over the pockets containing the bread and ada ted to travel with the drum until the brea is delivered thereontossubstantially as described.

7. In a bread making plant, an endless baking conveyer having baking molds incorporated therewith, a cleaning and oiling a aratus for the molds comprising rotatable c eaning brushes and oiling brushes, means v to supply oil to the oiling brushes, means to drive the cleaning and oiling brushes,and means moving synchronously with the` conveyer for bringing the mechanisms temporarily into engagement with the molds as they successively approach, substantially as described. l

8. In a bread making plant, an endless baking conveyer carrying attached baking v. the pans, and an oil feeding valve mecha? having notches which register at a critical point as each pan arrives under the cleaning means, and a supporting arm for the cleaning means which rides on.v both cams and drops into the notches therein when in register at said critical. point to lower the cleaning means into operating position.

10. In a bread making plant, an endless baking conveyer carrying attached bread pans, an oiling apparatus therefor comprising a reciprocable frame, distributing means Icarried by the frame, oil feeding means movable with the frame, means drlven synchronousl with the conveyer for bringing the distributing means into engagement with nism automatically opened and closedby the movement of the feeding means into and out of. engagement `with the pans, substantially as described.

11..-In a -breadmaking plant, an endless baking conveyer carryingattached pans, 'an oiling apparatus therefor comprising oil distributing mechanism, means to bring the mechanism into engagement with the successive pans, an oil distributing apparatus movable in part with the oiling means and having a fiexible connection which permits such movement, a feedvalve for the oil, and a rod having a fixed pivot at one end and pivotally connected to the valve at the other and disposed to open the valve automatically as the distributing means moves into engagement with the pan, and to close the -valve automatically as the distributing v4means moves out of engagement with the apparatus 13. In a bread making plant, the combination consisting of proofing` and baking chambers, a continuously driven convehyer `passing-circuitously through the proo and baking chambers, bread baking pans connected to and movable with the conveyer in continuous flight through both chambers,

disposed between and outside of both of said chambers to the prooing chamber. 4

14. In a bread making plant,' a pan coolthe air,

and an automatic pan cleaning.

and adapted to act on the pans While in movement from the baking ing apparatus `for an endless Hight of baking pans comprising a multiported air nozzle, a jacket about the nozzle having an outlet for means to supply air under pressure and pulleys to guidefthe flight the jacket and about the the pans successivelykto to the nozzle, of' pans through nozzle and expose the 'jetsof air `therein, as and for' the purposes described.-

In vtestimony whereof I aix my si nature.

Y WILLIAM F. L. F SCH.

Witness: p

NoMIE WELSH. 

